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Mathematics 18 Online
OpenStudy (anonymous):

Darius drew the diagram shown below and described it as an equilateral triangle with a square inside it. Point D is the midpoint of segment AC. The geometry teacher pointed out that the triangle cannot be equilateral since side AC is not equal to AB. Which statement best explains why the measurements are incorrect? A.) Segment AB is 8 + 6 + 8 = 22. B.) Segment AB is 8 + 8 + 8 = 24. C.) Segment AB ≈ 8 + 9.6 + 8 ≈ 25.6. D.) Segment AB ≈ 8 + 12.8 + 8 ≈ 28.8.

OpenStudy (anonymous):

OpenStudy (anonymous):

@Callisto

OpenStudy (callisto):

\[DE = 10^2 -8^2 =?\] EF =DE (prop. of square) AB = 8 + ? + 8 = ...?

OpenStudy (anonymous):

DE = 36

OpenStudy (anonymous):

how do i find wat goes in between the 8+8

OpenStudy (callisto):

Sorry... I missed a square root there \[DE = \sqrt {10^2 - 8^2}\]

OpenStudy (anonymous):

oh so its 6

OpenStudy (callisto):

EF =DE (prop. of square) so EF =?

OpenStudy (anonymous):

8+6+8 so the answer is A :D

OpenStudy (callisto):

Yeah!~

OpenStudy (anonymous):

thank you, sorry for asking so many questions its that i need to score atleast a 60% on this

OpenStudy (callisto):

Welcome. Hmm.. make sure you understand how to do it. I come to help others understand what they don't understand :)

OpenStudy (anonymous):

I see i understand most of it i usually put up the one i just dont know

OpenStudy (callisto):

Glad to hear that you understand. :)

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